<template>
  <div class="register-container">
    <el-form ref="registerForm" :model="registerForm" :rules="registerRules" class="register-form" autocomplete="on" label-position="left">

      <div class="title-container">
        <h3 class="title">注册</h3>
      </div>

      <el-form-item prop="username">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-input
          ref="username"
          v-model="registerForm.username"
          placeholder="请输入用户名"
          name="username"
          type="text"
          tabindex="1"
          autocomplete="on"
        />
      </el-form-item>

      <el-tooltip v-model="capsTooltip" content="Caps lock is On" placement="right" manual>
        <el-form-item prop="password">
          <span class="svg-container">
            <svg-icon icon-class="password" />
          </span>
          <el-input
            :key="passwordType"
            ref="password"
            v-model="registerForm.password"
            :type="passwordType"
            placeholder="请输入密码"
            name="password"
            tabindex="2"
            autocomplete="on"
            @keyup.native="checkCapslock"
            @blur="capsTooltip = false"
            @keyup.enter.native="handleRegister"
          />
          <span class="show-pwd" @click="showPwd">
            <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
          </span>
        </el-form-item>
      </el-tooltip>

      <el-form-item prop="verifyCode">

        <el-col :span="15">
          <span class="svg-container">
            <svg-icon icon-class="email" />
          </span>
          <el-input
            v-model="registerForm.email"
            type="text"
            autocomplete="false"
            tabindex="3"
            placeholder="请输入邮箱"
          />
        </el-col>
        <el-col :offset="0" :span="4">
          <el-button
            class="verify-button"
            type="button"
            :disabled="disable"
            plain
            tabindex="4"
            size="large"
            @click="getVerifyCode"
          >{{ present }}
          </el-button>
        </el-col>
      </el-form-item>

      <el-form-item prop="verifyCode">
        <span class="svg-container">
          <svg-icon icon-class="verify" />
        </span>
        <el-input
          ref="verifyCode"
          v-model="registerForm.verifyCode"
          placeholder="请输入验证码"
          name="verifyCode"
          type="text"
          tabindex="5"
          autocomplete="on"
        />
      </el-form-item>
      <el-button :loading="loading" type="primary" style="width:100%;margin-bottom:30px;" @click.native.prevent="handleRegister">Register</el-button>

      <div class="tips" style="position:relative">
        <span style="float: right;padding-right: 2px;cursor: pointer;" @click="gotoLogin">前往登陆</span>
      </div>
    </el-form>

  </div>
</template>

<script>
import { checkValid } from '@/utils/common'
import { getVerifyCode, register } from '@/api/user'
import { Message } from 'element-ui'

export default {
  name: 'Register',
  data() {
    return {
      disable: false,
      intervalId: '',
      time: 5 * 1000,
      send: false,
      registerForm: {
        username: '',
        password: '',
        email: '',
        verifyCode: ''
      },
      registerRules: {
        username: [{ required: true, message: '请输入用户名', trigger: 'blur' }],
        password: [{ required: true, message: '请输入用户名', trigger: 'blur' }],
        email: [{ required: true, message: '请输入邮箱', trigger: 'blur' }],
        code: [{ required: true, message: '请输入验证码', trigger: 'blur' }]
      },
      passwordType: 'password',
      capsTooltip: false,
      loading: false,
      showDialog: false,
      redirect: undefined,
      otherQuery: {}
    }
  },
  computed: {
    present() { // 根据验证码按钮状态返回label
      if (this.disable === false) {
        window.clearInterval(this.intervalId)
        return '发送验证码'
      } else return Number.parseInt(1 + this.time / 1000) + '秒后重发'
    }
  },
  created() {
    // window.addEventListener('storage', this.afterQRScan)
  },
  mounted() {
    if (this.registerForm.username === '') {
      this.$refs.username.focus()
    } else if (this.registerForm.password === '') {
      this.$refs.password.focus()
    } else if (this.registerForm.email === '') {
      this.$refs.email.focus()
    } else if (this.registerForm.verifyCode === '') {
      this.$refs.verifyCode.focus()
    }
  },
  destroyed() {
    // window.removeEventListener('storage', this.afterQRScan)
  },
  methods: {
    getVerifyCode() { // 检查邮箱地址合法性
      const email = this.registerForm.email
      const regex = /^\w+@+[0-9a-zA-Z]+\.(com|com.cn|edu|hk|cn|net)$/
      if (checkValid(this.registerForm.username, '请输入用户名.') &&
        checkValid(this.registerForm.password, '请输入密码.') &&
        checkValid(email, '请输入邮箱')) {
        if (!regex.test(email)) {
          this.$message.error('邮箱格式错误')
        } else {
          const allTime = this.time

          this.disable = true
          setTimeout(() => {
            this.disable = false
            this.time = allTime
          }, allTime)
          this.intervalId = setInterval(() => {
            this.time -= 500
          }, 500)

          const form = { to: email, date: Date.now() }
          getVerifyCode(form)
          this.send = true
        }
      }
    },
    gotoLogin() {
      this.$router.replace({ path: '/login' })
    },
    checkCapslock(e) {
      const { key } = e
      this.capsTooltip = key && key.length === 1 && (key >= 'A' && key <= 'Z')
    },
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    handleRegister() {
      if (!this.send) {
        Message({
          message: '未发送验证码',
          type: 'error',
          duration: 5 * 1000
        })
      }
      register(this.registerForm).then(res => {
        console.log('res', res)
         Message({
          message: res.message,
          type: 'success',
          duration: 2 * 1000
        })
        setTimeout(() => this.gotoLogin(), 2 * 1000)
      })
    }
  }
}
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg: #283443;
$light_gray: #fff;
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .register-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.register-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }

  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    color: #454545;
  }
}
</style>

<style lang="scss" scoped>
$bg: #2d3a4b;
$dark_gray: #889aa4;
$light_gray: #eee;

.register-container {
  min-height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;

  .register-form {
    position: relative;
    width: 520px;
    max-width: 100%;
    padding: 160px 35px 0;
    margin: 0 auto;
    overflow: hidden;
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }

  .thirdparty-button {
    position: absolute;
    right: 0;
    bottom: 6px;
  }

  @media only screen and (max-width: 470px) {
    .thirdparty-button {
      display: none;
    }
  }
}

.verify-button {
  background-color: #2d3a4b;
  padding: 17px 48px;
  color: #fff;
}
</style>
